that is what our data show about obesity, fix the environment. the limitations are the libertarians, -- limitations of acceptability, the feasibility, and cost. what can we do? we could tax and restrict access and intervene. i am not suggesting we intervene. we tried that with alcohol. it was a disaster. you cannot have storm troopers invading people's homes for baking an apple pie. that is not going to happen. i do not even suggest it. because my wife would be the first one they would have to take away. what we need to do, like we have with every other substantive abuse is come to peaceful coexistence. we have to find the right amount of legislation, regulation to be able to manage the problem rationally, like we tried to do with tobacco. we can argue about the wisdom of that, especially worldwide, and alcohol. no interdiction but plenty of taxation and restriction of access as needed. so what factors contribute to increased soft drink consumption? price. since the 1980's, the price has and the introduction of high fructose corn syrup, the price